From Longman Dictionary of Contemporary Englishtopeeto‧pee, topi /ˈtəʊpiː $ toʊˈpiː/ noun [countable] DCCa light hard hat that you wear to protect your head from the sun in hot countries
Examples from the Corpus
topee• After taking off his topee and wiping his head, he felt the boy's pulse automatically.Origin topee (1800-1900) Hindi topi “hat” 